If an article is too heavy, too large, or too small, it is considered what?

When an article is categorized as non-mailable, it means that it does not meet the standards set by the USPS for acceptable mail items. The Postal Service has specific guidelines regarding size, weight, and other characteristics of items that can be sent through the mail. If an item exceeds the weight limit, surpasses the maximum dimensions, or falls below the minimum size requirements, it cannot be mailed. This designation ensures the safety, efficiency, and proper handling of mail.

While the terms non-shippable and non-returnable might suggest that an item cannot be sent or returned for some reason, they do not specifically address the compliance with USPS mailing regulations. Non-complying generally conveys that something does not adhere to certain standards but lacks the specificity tied to mailing criteria. Therefore, identifying an article as non-mailable clearly articulates its inability to be accepted by the postal system based on the outlined criteria.